import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import goodsList from '../components/goods/List.vue'
import goodsAddPage from '../components/goods/Add.vue'
import orders from '../components/order/order.vue'
import reports from '../components/report/Report.vue'

Vue.use(VueRouter)

const originalPush = VueRouter.prototype.push
VueRouter.prototype.push = function push(location) {
  return originalPush.call(this, location).catch(err => err)
}
const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
      path: '/home', component: Home, redirect: '/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: Users },
        { path: "/rights", component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: "/params", component: Params },
        { path: "/goods", component: goodsList },
        { path: "/goods/add", component: goodsAddPage },
        { path: "/orders", component: orders },
        { path: "/reports", component: reports },
      ]
    }
  ]
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  //from代表从哪个路径跳转而来
  //next 是一个函数,表示放行  next() 放行   next('/login') 强制跳转
  if (to.path === '/login') return next();
  //获取token
  const tokenStr = sessionStorage.getItem('token');
  if (!tokenStr) {
    return next('/login');//没有token状态跳转回到首页
  } else {
    next()
  }
})
export default router
